Datasheet

AD7440/AD7450A
Rev. C | Page 14 of 28
10,000
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
2044 2045 2046 2047 2048 2049
03051-A-019
CODE
10,000
CODES
V
IN+
= V
IN–
10,000 CONVERSIONS
f
S
= 1MSPS
Figure 19. Histogram of 10,000 Conversions of a DC Input for the
AD7450A with V
DD
= 5 V
0
–140
–120
–100
–80
–60
–40
–20
0 100 200 300 400 500
03051-A-020
FREQUENCY (kHz)
SNR (dB)
8192 POINT FFT
f
SAMPLE
= 1MSPS
f
IN
= 100kHz
SINAD = +61.6dB
THD = –81.7dB
SFDR = –83.1dB
Figure 20. AD7440 Dynamic Performance with V
DD
= 5 V
0.5
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0 256 512 768 1024
03051-A-021
CODE
DNL ERROR (LSB)
Figure 21. Typical DNL for the AD7440 for V
DD
= 5 V
0.5
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0 256 512 768 1024
03051-A-022
CODE
INL ERROR (LSB)
Figure 22. Typical INL for the AD7440 for V
DD
= 5 V